It's the formation they run the entire drive. They can't change it at the goalline or it's a giveaway.
I personally hate that we run so much shotgun. I guess the idea is that it simplifies things for the QB and helps them see the field better. But I think it stifles your running game.
We talked a lot about it on another thread, but I think this is what hurts our running game. First, you know we're running it before we run it because there'll be someone in the backfield with McCoy. Otherwise there almost never is. Second, your running back gets the ball at a dead stop. Rather than have the benefit of a head of steam, you have a bull****, slow as hell to develop play where you're getting the ball to be tackled potentially for a loss 5-6 yards back.
But the shotgun really hurts because, when you try to change it up, it's a dead giveaway. Why would you go under center inside the 10 or so? To run the ball. Not to pass. Otherwise you'd do that they whole way downfield. Therefore if you're under center you're running it.
So because you're so reliant on the shotgun formation to get there, you have to stick with it once you are there.